Universal Delusion

With this spell the caster can fool the universe into thinking that their death was only an illusion.

The spell's effect lasts for 1d6+4 rounds.

Should the caster ever die while under the effect of this spell they will instead, at the start of their next turn, be restored to half their total hit points and materialize in a space within 60 feet of the place they died. Their corpse will fade away like a mirage while any items they had at their time of death will rematerialize at their rightful place with the caster. The caster can choose if any spells affecting them are still in effect, even if concentration on them were broken by the killing blow.

This revival consumes a 1000gp diamond and might occur multiple times during the duration of the spell, with a new diamond being consumed each time.